CN215257364U

CN215257364U - Heterodromous damping device and electric telescopic mechanism

Info

Publication number: CN215257364U
Application number: CN202120361856.7U
Authority: CN
Inventors: 李光春; 陈江灏; 徐迎庆; 周玮
Original assignee: Magna Automotive Parts Suzhou Co ltd
Current assignee: Magna Automotive Parts Suzhou Co ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-12-21
Anticipated expiration: 2031-02-09
Also published as: DE102022102632A1; US12078004B2; US20220251892A1

Abstract

The utility model relates to a damping device technical field specifically discloses an incorgruous abnormal value damping device and electronic telescopic machanism, and this incorgruous abnormal value damping device includes the casing, rotates piece and torsional spring, and the casing is provided with the through-hole, rotates the piece and wears to locate the through-hole and rotate with the casing and be connected, and the torsional spring cover is located rotate the piece and with rotate an interference fit, and the torsional spring is provided with first stabilizer blade, first stabilizer blade and casing rigid coupling. The device can realize the function of generating different torque values in different rotating directions.

Description

Heterodromous damping device and electric telescopic mechanism

Technical Field

The utility model relates to a damping device technical field especially relates to an incorgruous abnormal value damping device and electronic telescopic machanism.

Background

A torsion spring with two support legs is in interference fit with a metal shaft (or a shaft sleeve) (for example, the inner surface of the torsion spring is tightly sleeved on the outer surface of the shaft), the support legs of the torsion spring are fixed on a shell part, and if the metal shaft (or the shaft sleeve) is rotated, friction torque is generated on the matching surface of the torsion spring and the shaft at the moment, and the friction torque can be used as damping in a system. However, the device can only generate a relatively constant torque value in different rotating directions, and cannot generate different torque values in different rotating directions.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: a different-direction different-value damping device and an electric telescopic mechanism are provided to solve the problem that different torque values cannot be generated in different rotating directions in the related art.

In one aspect, the utility model provides an incorgruous abnormal value damping device, this incorgruous abnormal value damping device include the casing, rotate piece and torsional spring, the casing is provided with the through-hole, it wears to locate to rotate the through-hole and with the casing rotates to be connected, the torsional spring cover is located rotate the piece and with rotate an interference fit, the torsional spring is provided with first stabilizer blade, first stabilizer blade with the casing rigid coupling.

As a preferred technical solution of the anisotropic damping device, the housing includes a first notch, the first leg is disposed in the first notch, and a side wall of the first notch is fixedly connected to the first leg.

As a preferred technical solution of the anisotropic damping device, the torsion spring further includes a second leg, the housing further includes a second notch, and an opening width of the first notch is smaller than an opening width of the second notch;

the second support leg is arranged in the second notch, the second support leg has a first state of being abutted with a first side wall of the second notch and a second state of being abutted with a second side wall of the second notch, and the first side wall is opposite to the second side wall.

As the preferred technical scheme of incorgruous abnormal value damping device, it includes pivot and axle sleeve to rotate the piece, the axle sleeve cover is located the pivot and with the pivot rigid coupling, the torsional spring housing is located the axle sleeve and with axle sleeve interference fit, the axle sleeve is worn to locate the through-hole and with the casing rotates and connects.

As an optimal technical scheme of the anisotropic damping device, the rotating shaft is provided with an external spline, the shaft sleeve is provided with an internal spline, the shaft sleeve is sleeved on the rotating shaft, and the internal spline is connected with the external spline in a key connection mode.

As a preferable technical scheme of the anisotropic damping device, the shaft sleeve is in interference fit with the rotating shaft.

As a preferable technical scheme of the anisotropic damping device, the diameter of the through hole is smaller than the outer diameter of the torsion spring.

As a preferable technical solution of the different-direction different-value damping device, the rotating member further includes a driving ring, the rotating shaft extends into the through hole and is fixedly connected with the driving ring, the driving ring and the housing are arranged at an interval, and the diameter of the driving ring is not smaller than the outer diameter of the torsion spring.

As a preferable technical scheme of the anisotropic damping device, the housing is provided with a weight reduction groove.

On the other hand, the utility model provides an electronic telescopic machanism, incorgruous abnormal value damping device in above-mentioned arbitrary scheme.

The utility model has the advantages that:

the utility model provides an incorgruous abnormal value damping device, this incorgruous abnormal value damping device include the casing, rotate piece and torsional spring, and the casing is provided with the through-hole, rotates the piece and wears to locate the through-hole and rotate with the casing and be connected, and the torsional spring cover is located rotate piece and with rotate an interference fit, the torsional spring is provided with first stabilizer blade, first stabilizer blade and casing rigid coupling. When the rotating direction of the installed torsion spring is right, and the rotating piece rotates anticlockwise, the torsion spring rotates anticlockwise along with the rotating piece due to interference fit between the torsion spring and the rotating piece, and the torsion spring slightly expands at the moment due to the fixed connection between the first support leg and the shell, so that the interference magnitude between the torsion spring and the rotating piece is reduced, and a smaller friction torque is generated; when clockwise rotation rotated the piece, because the torsional spring rotated piece interference fit with rotating, so the torsional spring rotated clockwise along with rotating the piece, because first stabilizer blade and casing fixed connection, thereby the torsional spring can be radially tensioning slightly at this moment and increase the magnitude of interference of torsional spring and rotation piece, can produce great friction torque. The device can realize the function of generating different torque values in different rotating directions.

Drawings

Fig. 1 is a schematic structural diagram of a anisotropic damping device according to a first embodiment of the present invention;

fig. 2 is a schematic view of a housing structure of a anisotropic damping device according to a first embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1 according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a anisotropic damping device according to a second embodiment of the present invention.

In the figure:

1. a housing; 11. a through hole; 12. a first notch; 13. a second notch; 131. a first side wall; 132. a second side wall; 14. a weight reduction groove;

2. a rotating member; 21. a rotating shaft; 22. a shaft sleeve; 23. a drive ring;

3. a torsion spring; 31. a first leg; 32. a second leg.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Example one

As shown in fig. 1 to 3, the embodiment provides a damping device with different directions and different values, the damping device with different directions and different values includes a housing 1, a rotating member 2 and a torsion spring 3, the housing 1 is provided with a through hole 11, the rotating member 2 is inserted into the through hole 11 and is rotatably connected with the housing 1, the torsion spring 3 is sleeved on the rotating member 2 and is in interference fit with the rotating member 2, the torsion spring 3 is provided with a first supporting leg 31, and the first supporting leg 31 is fixedly connected with the housing 1. When the rotation direction of the installed torsion spring 3 is right rotation, and the rotating part 2 rotates anticlockwise, the torsion spring 3 rotates anticlockwise along with the rotating part 2 due to the interference fit between the torsion spring 3 and the rotating part 2, and the torsion spring 3 slightly expands at the moment due to the fixed connection between the first support leg 31 and the shell 1, so that the interference magnitude between the torsion spring 3 and the rotating part 2 is reduced, and a smaller friction torque is generated; when clockwise rotation piece 2, because torsional spring 3 and the interference fit of rotation piece 2, so torsional spring 3 rotates clockwise along with rotation piece 2, because first foot 31 and casing 1 fixed connection, thereby torsional spring 3 can be in the radial slight tensioning increase torsional spring 3 and the magnitude of interference of rotation piece 2 this moment, can produce great friction torque. The device can realize that different torque values are generated in different rotating directions.

Optionally, the housing 1 includes a first notch 12, the first leg 31 is disposed in the first notch 12, and a sidewall of the first notch 12 is fixedly connected to the first leg 31. The first notch 12 in this embodiment functions to fix the first leg 31. In other embodiments, the first leg 31 may be fixed to the housing 1 directly by welding or the like.

Optionally, the rotating member 2 includes a rotating shaft 21 and a shaft sleeve 22, the shaft sleeve 22 is sleeved on the rotating shaft 21 and fixedly connected to the rotating shaft 21, the torsion spring 3 is sleeved on the shaft sleeve 22 and interference-fitted to the shaft sleeve 22, and the shaft sleeve 22 is inserted into the through hole 11 and rotatably connected to the housing 1. In this embodiment, the shaft sleeve 22 is sleeved on the rotating shaft 21, the shaft sleeve 22 is in interference fit with the torsion spring 3, when the rotating shaft 21 rotates, the shaft sleeve 22 and the torsion spring 3 can slide relatively, and the shaft sleeve 22 is worn by long-term use, so the shaft sleeve 22 needs to be replaced at regular time, and therefore the shaft sleeve 22 is designed with less maintenance and replacement cost.

Optionally, the rotating shaft 21 is provided with an external spline, the shaft sleeve 22 is provided with an internal spline, the shaft sleeve 22 is sleeved on the rotating shaft 21, and the internal spline is pinned with the external spline. In this embodiment, since the shaft sleeve 22 is fixedly connected to the rotating shaft 21, the present embodiment is pinned by using internal and external splines. In other embodiments, the keys may be connected by flat keys.

Preferably, the sleeve 22 is interference fitted with the shaft 21. In this embodiment, in order to prevent the sleeve 22 from sliding along the axis of the rotating shaft 21, the sleeve 22 and the rotating shaft 21 need to be in interference fit, and in other embodiments, the sleeve 22 may be fixed by passing a bolt through the sleeve 22 and screwing with the rotating shaft 21.

Alternatively, the diameter of the through hole 11 is smaller than the outer diameter of the torsion spring 3. In this embodiment, the diameter of the through hole 11 is smaller than the outer diameter of the torsion spring 3 to prevent the torsion spring 3 from moving along the axis of the rotating shaft 21 during use.

Optionally, the rotating member 2 further comprises a driving ring 23, the rotating shaft 21 extends into the through hole 11 and is fixedly connected with the driving ring 23, the driving ring 23 is spaced from the housing 1, and the diameter of the driving ring 23 is not smaller than the outer diameter of the torsion spring 3. In this embodiment, the driving ring 23 can serve to transmit power, and the driving ring 23 can limit the movement of the torsion spring 3 in the other direction along the axis of the rotating shaft 21.

Optionally, the housing 1 is provided with lightening slots 14. In this embodiment, the weight-reducing slots 14 can reduce the material cost on the one hand and the weight of the device on the other hand.

Example two

As shown in fig. 4, the only difference between the present embodiment and the first embodiment is that the torsion spring 3 further includes a second leg 32, the housing 1 further includes a second notch 13, and the opening width of the first notch 12 is smaller than the opening width of the second notch 13; the second leg 32 is disposed in the second notch 13, the second leg 32 has a first state abutting against the first sidewall 131 of the second notch 13 and a second state abutting against the second sidewall 132 of the second notch 13, and the first sidewall 131 and the second sidewall 132 are opposite to each other.

The second leg 32 slides in the second notch 13, and the second notch 13 plays a role of limiting in this embodiment, and the initial position of the second leg 32 is located at the midpoint of the distance between the first side wall 131 and the second side wall 132, and is the maximum rotation angle through which the rotating shaft 21 rotates counterclockwise when located in the first state, and is the maximum rotation angle through which the rotating shaft 21 rotates clockwise when located in the second state.

The embodiment also provides an electric telescopic mechanism which comprises the anisotropic damping device in the scheme.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a heterodromous abnormal value damping device, its characterized in that, includes casing (1), rotates piece (2) and torsional spring (3), casing (1) is provided with through-hole (11), rotate piece (2) and wear to locate through-hole (11) and with casing (1) rotates and is connected, torsional spring (3) cover is located rotate piece (2) and with rotate piece (2) interference fit, torsional spring (3) are provided with first stabilizer blade (31), first stabilizer blade (31) with casing (1) rigid coupling.

2. Heterodromous damping device according to claim 1, characterized in that said housing (1) comprises a first notch (12), said first leg (31) being arranged in said first notch (12), and the side walls of said first notch (12) being fixedly connected to said first leg (31).

3. Heterodromous damping device according to claim 2, characterized in that the torsion spring (3) further comprises a second leg (32), the housing (1) further comprises a second notch (13), the opening width of the first notch (12) being smaller than the opening width of the second notch (13);

the second leg (32) is disposed within the second slot (13), the second leg (32) having a first state in abutment with a first side wall (131) of the second slot (13) and a second state in abutment with a second side wall (132) of the second slot (13), the first side wall (131) and the second side wall (132) being opposite.

4. The anisotropic damping device of claim 1, wherein the rotating member (2) comprises a rotating shaft (21) and a shaft sleeve (22), the shaft sleeve (22) is sleeved on the rotating shaft (21) and fixedly connected with the rotating shaft (21), the torsion spring (3) is sleeved on the shaft sleeve (22) and in interference fit with the shaft sleeve (22), and the shaft sleeve (22) is inserted in the through hole (11) and is rotatably connected with the housing (1).

5. Heterodromous damping device according to claim 4, characterized in that the shaft (21) is provided with an external spline, the sleeve (22) is provided with an internal spline, the sleeve (22) is sleeved on the shaft (21), and the internal spline is connected with the external spline.

6. Heterodromous damping device according to claim 5, characterized in that said bushing (22) is interference fitted with said shaft (21).

7. Heterodromous damping device according to claim 4, characterized in that the diameter of the through hole (11) is smaller than the outer diameter of the torsion spring (3).

8. The anisotropic damping device of claim 7, wherein the rotating member (2) further comprises a driving ring (23), the rotating shaft (21) extends into the through hole (11) and is fixedly connected to the driving ring (23), the driving ring (23) is spaced from the housing (1), and the diameter of the driving ring (23) is not smaller than the outer diameter of the torsion spring (3).

9. Heterodromous damping device according to any of claims 1-8, characterized in that the housing (1) is provided with weight-reducing slots (14).

10. An electric telescopic mechanism comprising the heterodromous damping device according to any one of claims 1 to 9.